Trolley-equalizer



(No Model.) A

G. F. GORLISS.

TROLLEY EQUALIZER. No. 426,436. Patented Apr. 29, 1890 bve 660W @lf/cd trio street-ear.

in eachside of the ease.

NiTED STATES PATENT OFFICE.

GEORGE F. OORLISS, OF MANSFIELD, OHIO. l

SPECIFICATION forming'part o f Letters Patent No. 426,436, dated April 29, 1890.

Applicant mainly so, 1389.

To all. whom it'may concern: y

Be it known that l, GEORGE F. CORLSS, av citizen of the United States,1esidiug at Mansfield, inthe county of Richland and State of Ohio, have invented certain new Aand useful improvements in Trolley-hlqualizers; and I do declare the iollowing to be a full, clear, andexact description of theinvention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates torrnprovexnents in v trolley-equalizer B, showing a long ritudinal sectional side elevation of same einbodying all its generalv construction. Figf 3 is a top view of same, 'showing its generalconst'ruction. Fig. el is an end View wshowing the construction of slides, taken in line an, Fig. 2.

Fig 5 is a detail View.

A represents the upper portion of. an elec- Centrally and at each end is secured the trolley-equalizer B, which is composed of a case B. Journaled in theouter end is the sheave-pulley'l, running loosely upon a pin or bolt, said bolt having vbearings 'FF2 F3 F4 represent rods-four in number* running longitudinally on each side o the center, two of said rod-s above the axleo the slieave-pulley K'and two below. The said rods are secured at each end of the case in cavities made to receive them. At the outer end the method shown to secure them` from turning isby a pin P, passing through the rod F near the end', and said pins fit in a mortise in the head XV. At the end of case I aslot Y is made to receive the said rods, as shown in Fig. 2.

G indicates coil-springs, whlch extend the seni no. als 145. tamano# ',full, or nearly the full, length of the case, the rods VF'VFz F3 FL passing through the center "of the springs. One end'of the springs G is vsecured to the'V endof case AWlthe opposite The saidisiides arcor/instructed ywith-"a slot in each endatid slide upon the rods FZ'FSF". in' the sliding' blocks l-I.V Centrallybetween l ends secu-red to the sliding blocks'H and H', i

the guiderrods F and F2, and attached tothe sliding block H, is the link or bail S, to which M. vOne end "of said cordis semredV rto said link S,.then passes forward to the sheaveis attached by any suitable method the cord pulley K, passing through the hole V, t-hen'toV the link S,'attached to the sliding. block H.

The trolley-connecting cord AE isconnectd to the .sheavepulley K, as shown 1n-Fig 2.

l A hole x 'is made through the side of the pnl ley large enough to receive a knot onthe end ...of cord.v4 holeismadefthrough theedge of z pulley at right angles to intersect with 'the lhole w when the cord is placedin position and a knot made on the end. The knot, passing into the hole secures' the oord perinanently'to the sheave-pulley K. The said puln ley is of suilieient Width between its Hanges to' receive any amount of coils required. The outer end of cord E is provided with ,the connection N. The link S isv secured to the counection N. The open loop O is linkedto the trolley C. l Y Y.

' Fig. 1 shows the equaliz'ers and trolley 1n. position, with the cords E attached to the trolley C. `It will he readily seen that when the connections are made `there is an equal tensionon the springs at each end of the car.

-Anyobstructior-r that would retard the for? Ward motion of the trolley.wcildnecessarily pull on the cord E. The tension onv the cord rotates the sheave`-pulley K. The cord M,at taehedto the sliding blocks H, will be wound around the axleof the sheave-pulley-Ii, cornv pressing the springs G. At' the opposlteend -f :the springs would expand, taking upfihe slack'by the backward motion of the sheavepulley.

Should the wires on which the -trol- .v

ley travels vary in` elevation, the cords Ewill Ie'ngthento suit the different girades. .Coil-v springs have been used and are'in use at the present time.. The said springs as used are not practical for this reason: Should the trolley be obstru'ctedin passing over a bracket or switch, the 4tension on the coil-spring is too great, stretching it eyond its elastic capacity, damaging thel spring; or when the electric conductivewires are raised, as in passing over arailway-track, the dierence of tension is so great that it destroys the elasticity of the spring. By constructing a device as shown and described all that difficulty is obviated.

- I do not Wish to be limited to all the details of construction and arrangements shown, as they niaybe somewhat Varied without departing from the spirit of my invention.

-In Fig. 2 there is shownaspring Q. Jhis spring is secured at its lower end to the end of case W. The upper or spring end passes betweenk the fianges of' the sheave-pulley to edge of the ange of pulley.

J shows a pulley under which passes the cordA E. This obviates friction and wear on] the cord when passing froin thelpulley through the case to the trolley.

i I' have also shown in Fig. 5 a inodication in which a cord and weight are used in the place of the coil-springs G. The pulley C3 is inclosed within a case.` A cord A8 and weight Bs are attached to the journal of the pulley C3, the-weight B acting in this case as the springs G,1Fig. 2. In the place of the cord and weight, asl shown, a' coiled spring; the saine as a clock-spring, can be used with the same result as the other methods shown.

Having thus described my invention, what Il claim as new, and desire to secure by Letters the drums on which said cords are wound,A

and the spring-actuated sliding blocks connected to said drums.` 4

2. In a trolley-equalizer, the combination of the case, the drum mounted rotatably in said case, the cords connected lto said drums, the blocks connected to said cords, the guide-rods ior the blocks, and' the springs around said rods.

3. In a trolley-equalizer, the combination of the trolley,`cords, and drums',v the spring-actuated blocks, -and the guide-rods for said blocks.

4. Inga trolley-equalizer, the combination of the case, the guide-rods therein, the springs on said rods, the blocks against which the springs bear, and the diiini connected to said blocks.

In testimony whereof I aiiix my signature in f vpresence of two Witnesses.

GEORGE F.. CORLISS.

Vitnesscs: A

RooLiFF BRINKERHOFF, Jr., J No.l GAY. 

